Dr. Ned Wright maintains a website on which you will find an overview and a four-part introduction to cosmology. If you click on the link below, a new window will be opened for you. You can link to the four parts of the cosmology discussion from that new window. Please remember to close the new window to return to this page.From that same new window, you can link to other useful web pages written by Dr. Wright. Those pages include a compilation of frequently asked questions plus tutorials on determining the age of the universe, measuring astronomical distances, and relativity.
Click here for introductory cosmology, overview.